Dependency of the corrosion properties of in-situ Ti-based BMG matrix composites with the volume fraction of crystalline phase

Mukta Rani Debnath, Do Hyang Kim, Eric Fleury

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

The chemical and electrochemical corrosion properties of in-situ Ti 45(Zr-Be-Cu-Ni) 55-xNb x BMG matrix composites, with x = 0, 5, 10, 15 at.% and containing different volume fractions of crystalline β-(Ti,Zr,Nb) phase, have been investigated in a hydrogenated 1 M H 2SO 4 + 2 ppm F - electrolyte at 80 °C. In comparison to monolithic Ti-based BMGs and Ti-6Al-4V alloy, the in-situ BMG matrix composite with ∼20% volume fraction of β-(Ti,Zr,Nb) phase exhibits a high corrosion resistance characterized by a low value of corrosion current density, a stable passivation behavior in both potentiodynamic and potentiostatic polarization and low weight loss during immersion tests. The enhancement of the corrosion resistance is attributed to Ti-, Zr- and Nb-rich oxide layers produced on top of both the dendrite and amorphous matrix. However, for the BMG composite with a large (∼41.5%) volume fraction of Nb-rich dendrites the corrosion resistance was reduced leading to the dissolution of the amorphous matrix during immersion tests.

Original languageEnglish
Pages (from-to)255-259
Number of pages5
JournalIntermetallics
Volume22
DOIs
Publication statusPublished - 2012 Mar 1

Fingerprint

Corrosion resistance
Volume fraction
Corrosion
Crystalline materials
Composite materials
Electrochemical corrosion
Passivation
Oxides
Electrolytes
Dissolution
Current density
Polarization
titanium alloy (TiAl6V4)

All Science Journal Classification (ASJC) codes

  • Mechanical Engineering
  • Mechanics of Materials
  • Materials Chemistry
  • Metals and Alloys
  • Chemistry(all)

Cite this

@article{2bec3e6b1dac47c9a5e09aece9f50978,
title = "Dependency of the corrosion properties of in-situ Ti-based BMG matrix composites with the volume fraction of crystalline phase",
abstract = "The chemical and electrochemical corrosion properties of in-situ Ti 45(Zr-Be-Cu-Ni) 55-xNb x BMG matrix composites, with x = 0, 5, 10, 15 at.{\%} and containing different volume fractions of crystalline β-(Ti,Zr,Nb) phase, have been investigated in a hydrogenated 1 M H 2SO 4 + 2 ppm F - electrolyte at 80 °C. In comparison to monolithic Ti-based BMGs and Ti-6Al-4V alloy, the in-situ BMG matrix composite with ∼20{\%} volume fraction of β-(Ti,Zr,Nb) phase exhibits a high corrosion resistance characterized by a low value of corrosion current density, a stable passivation behavior in both potentiodynamic and potentiostatic polarization and low weight loss during immersion tests. The enhancement of the corrosion resistance is attributed to Ti-, Zr- and Nb-rich oxide layers produced on top of both the dendrite and amorphous matrix. However, for the BMG composite with a large (∼41.5{\%}) volume fraction of Nb-rich dendrites the corrosion resistance was reduced leading to the dissolution of the amorphous matrix during immersion tests.",
author = "Debnath, {Mukta Rani} and Kim, {Do Hyang} and Eric Fleury",
year = "2012",
month = "3",
day = "1",
doi = "10.1016/j.intermet.2011.03.022",
language = "English",
volume = "22",
pages = "255--259",
journal = "Intermetallics",
issn = "0966-9795",
publisher = "Elsevier Limited",

}

Dependency of the corrosion properties of in-situ Ti-based BMG matrix composites with the volume fraction of crystalline phase. / Debnath, Mukta Rani; Kim, Do Hyang; Fleury, Eric.

In: Intermetallics, Vol. 22, 01.03.2012, p. 255-259.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Dependency of the corrosion properties of in-situ Ti-based BMG matrix composites with the volume fraction of crystalline phase

AU - Debnath, Mukta Rani

AU - Kim, Do Hyang

AU - Fleury, Eric

PY - 2012/3/1

Y1 - 2012/3/1

N2 - The chemical and electrochemical corrosion properties of in-situ Ti 45(Zr-Be-Cu-Ni) 55-xNb x BMG matrix composites, with x = 0, 5, 10, 15 at.% and containing different volume fractions of crystalline β-(Ti,Zr,Nb) phase, have been investigated in a hydrogenated 1 M H 2SO 4 + 2 ppm F - electrolyte at 80 °C. In comparison to monolithic Ti-based BMGs and Ti-6Al-4V alloy, the in-situ BMG matrix composite with ∼20% volume fraction of β-(Ti,Zr,Nb) phase exhibits a high corrosion resistance characterized by a low value of corrosion current density, a stable passivation behavior in both potentiodynamic and potentiostatic polarization and low weight loss during immersion tests. The enhancement of the corrosion resistance is attributed to Ti-, Zr- and Nb-rich oxide layers produced on top of both the dendrite and amorphous matrix. However, for the BMG composite with a large (∼41.5%) volume fraction of Nb-rich dendrites the corrosion resistance was reduced leading to the dissolution of the amorphous matrix during immersion tests.

AB - The chemical and electrochemical corrosion properties of in-situ Ti 45(Zr-Be-Cu-Ni) 55-xNb x BMG matrix composites, with x = 0, 5, 10, 15 at.% and containing different volume fractions of crystalline β-(Ti,Zr,Nb) phase, have been investigated in a hydrogenated 1 M H 2SO 4 + 2 ppm F - electrolyte at 80 °C. In comparison to monolithic Ti-based BMGs and Ti-6Al-4V alloy, the in-situ BMG matrix composite with ∼20% volume fraction of β-(Ti,Zr,Nb) phase exhibits a high corrosion resistance characterized by a low value of corrosion current density, a stable passivation behavior in both potentiodynamic and potentiostatic polarization and low weight loss during immersion tests. The enhancement of the corrosion resistance is attributed to Ti-, Zr- and Nb-rich oxide layers produced on top of both the dendrite and amorphous matrix. However, for the BMG composite with a large (∼41.5%) volume fraction of Nb-rich dendrites the corrosion resistance was reduced leading to the dissolution of the amorphous matrix during immersion tests.

UR - http://www.scopus.com/inward/record.url?scp=84855432709&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84855432709&partnerID=8YFLogxK

U2 - 10.1016/j.intermet.2011.03.022

DO - 10.1016/j.intermet.2011.03.022

M3 - Article

VL - 22

SP - 255

EP - 259

JO - Intermetallics

JF - Intermetallics

SN - 0966-9795

ER -